i need some amp help

the volume on my laney gc80 was fluxuating and being annoying, so i went to go change the volume pot, but i realized its a 4.7k, which is a random value...and the only 4.7k pots you can find are Linear taper, and i wanted an audio taper, so i ordered a 5k instead, because an electricician told me i could use a higher valued pot, just not lower. i just soldered in the 5k and, it didnt work....i get volume, but it is not changed wehen you raise the volume, and it sounds like complete ****, i also have a 4.7k linear coming to me? should i try it...or is this amp just a total waste of my solder? lol if anyone can help me itd be awesome

the 4.7k engraved into the back of the pot gave me the impression that it was probably, a 4.7k pot....lol i am using a 5k Alpha Audio Taper....does the alpha **** have something to do with it..im not up to par on my terminology.